Control solution test results are automatically stored with the word contrl. (If you use a logbook, indicate control solution tests
by writing “C” after the result.)
Control solution results
If test results fall outside the range printed on the test strip vial, repeat the test. Results that fall outside the expected range may indicate:
■Procedural error
■Control solution that has not been shaken enough
■Expired or contaminated control solution
■Improper coding of the meter
■Dirt on test strip holder or on test area beneath the test strip holder
■Test strip deterioration
■Expired or contaminated test strip
■Meter malfunction
■Extremes in testing temperatures
CAUTION: If your control solution test result falls outside the expected range, the system may not be working properly. Do not use the system to test your blood until you get a test result that falls within the expected range. If you are unable to resolve the problem, call your authorized LifeScan representative.
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